Improvement in bench-planes



1:. M. CLARK. BENCH-PLANES.

No. 195,481. Patented Sept.25, 1877.

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UNITED STATEs PATENT OFFICE.

HENRY M. CLAEK, OF NEW BRITAIN, CONNECTICUT.

IMPROVEMENT IN BENCH-PLANES.

Specification formingpart of Letters Patent No. 195,481, dated September25, 1877; application filed August To all whom it may concern:

Be it known that I, HENRY M. CLARK, of

New Britain, in the county of Hartford and State of Connecticut, haveinvented certain new and useful Improvements in Devices for AdjustingPlane-Irons, of which the following is a specification:

My invention consists in the employment of atransverse slide providedwith an inclined slot and opera-ting screw, and also in the peculiarconstruction of the parts, as hereinafter described.

In the accompanying drawings, Figure 1 is a side elevation ofa devicefor adjusting planeirons which embodies my invention. Fig. 2 is asectional view of the same on line a: w of Fig. 1, with cap andplane-iron removed, the same being viewed from a point at right anglesto the face of the frog; and Fig. 3 is a transverse section of the sameon line 3 y of Fig. 2.

The stock A may be any of, the ordinary kinds, and the frog B can besecured thereto in any proper manner. Transversely to the frog B is arecess or depression, a, which is made shallow on the right-hand side ofthe frog and deep on the left-hand side of the frog. The body of ascrew, b, passes through the solid metal of the frog just under theshallow portion of the depression a, and the screw proper extends intothe deeper portion of 'said depression.

The outer end of the screw b is provided with a suitable head or handle,0, for operating said screw, and it is prevented from longitudinalmovement by shoulders at each end of its bearing in the frog.

Fitted to move in the depression a is a slide, C, having an inclinedslot, 01, and threaded lug e, through which lug the screw b passes. Byturning the screw the slide may be moved endwise either to the right orleft, as may be desired.

Another slide, D, is fitted to slide longitudinally in a recess in thefrog B, and the upper end of this longitudinal slide is provided on itsunder side with a projecting pin or stud, f, Fig. 3, also indicated bybroken lines in Fig. 2, which pin or stud engages the side walls of theinclined slot in the slide 0. In the lower end of the longitudinal slideis an orifice to receive the head of the ordinary cap-screw, whichorifice, g, Fig. 2, may be elongated somewhat from right to left, sothat the plane-irons F may be moved sidewise a little to bring the endof the cutting-bit square with the face of the stock.

When the transverse slide is moved endwise, by means of the operatingscrew, the side walls of the inclined slot d engage the pin or stud f,and move the longitudinal slide and plane-irons.

If the slide C is moved to the right, the longitudinal slide D is forceddownward, carrying the plane-irons with it, and, if moved to the left,the plane-irons are drawn upward into the stock'with said slide.

If desired, instead of connecting the longitudinal slide to theplane-irons through means of the ordinary cap -screw, a stud may beattached directly to the cutting-iron, and received in the orifice atthe lower end of the longitudinal slide.

My adjustment is very cheaply constructed, and adjusts the planeironwith ease and smoothness.

I claim as my invention 1. In a device for adjusting plane-irons, thetransverse slide, provided with inclined slot and operating mechanismfor moving said slide transversely to the plane-iron, substantially asdescribed, and for the purpose specified.

2. In a device for adjusting plane-irons, the screw b, set transverselyto the frog, and secured from longitudinal movement, in combination withthe incline slotted slide, provided with threaded lug e, which receivesthe adjusting-screw, substantially as described, and for the purposespecified.

HENRY M. CLARK.

Witnesses:

T. A. CONKLIN, JAMES SHEPARD.

